POST Audio - This is not an MP3 file - Error

[Daniel Sadjadian]

Hi,

I am attempting to make an audio based post on Tumblr via my app. When I upload the audio file, I get the following error back:

meta =     {

        msg = "Bad Request";

        status = 400;

    };

    response =     {

        errors =         (

            "This is not an MP3 file."

        );

    };

I don't understand what is wrong, I have checked the file I am uploading and can confirm that it is an MP3 file.

What's the solution to this problem?

Thanks for your time, Dan.